Keep your car's AC system in top shape with this Prywog valve core cover kit! This 10-piece set includes both low side and high side port covers that are essential for protecting your air conditioning system from dust, moisture, and damage. You get 5 low side covers with 13mm inner diameter and 5 high side covers with 16mm inner diameter - basically everything you need to cover all the important ports on most vehicles. These aren't flimsy little caps either - they're made from durable ABS plastic that can handle high temperatures without warping or cracking. The secret sauce is the rubber sealing ring inside each cover that creates an airtight seal to keep out contaminants that could mess with your AC performance. Installation is a total breeze - just snap them on and you're good to go. They're perfect for replacing those old, cracked, or missing covers that came with your car originally. When your AC ports aren't properly covered, all kinds of gunk can get in there and cause leaks or corrosion over time. These covers prevent that from happening, helping your AC system last longer and work more efficiently. The black color looks OEM and professional, not like some cheap aftermarket part. Whether you're a DIY car enthusiast or a professional mechanic, having these on hand is just smart maintenance. They're universal enough to fit most cars, trucks, and SUVs out there. Think of them as insurance for your AC system - a few bucks now could save you from expensive AC repairs down the road. Plus, having a full set means you can do multiple vehicles or keep spares for when you need them.